How to Remove a Previous ViewController

Question

I am a student and pretty new to programming. I am trying to learn Objective-C/Swift in my spare time. I made a game using spriteKit with swift that has multiple menus/scenes. <

Answer 1

For swift 3 you can replace

self.present(ViewController(), animated: false, completion: nil);

with

if let window = UIApplication.shared.keyWindow{
            window.rootViewController = UINavigationController(rootViewController: ViewController());
        }